<h1>Login to Persons</h1>
<div>
    <span>Current user:</span>
    <span id="current_user" class="current-user"></span>
</div>
<hr/>
<label class="error">{{error_message}}</label>
<div>
    <label>User name:</label>
    <input id="username" type="text">
</div>
<div>
    <label>Password:</label>
    <input id="password" type="password">
</div>
<button onclick="login()">Log in</button>
